VariablesWhich of the following is not a correct variable type?Optionsdoubleintrealfloatchar

To determine which of the options is not a correct variable type, let's analyze each option provided regarding common programming languages, particularly in languages like C, C++, and Java.

1. double: This is a correct variable type that represents a double-precision floating-point number.
2. int: This is a correct variable type that represents an integer.
3. real: While "real" is sometimes used in certain languages, it is not a standard variable type in many popular programming languages. Usually, "float" is the type representing single-precision floating-point numbers, while "double" is for double-precision.
4. float: This is a correct variable type that represents a single-precision floating-point number.
5. char: This is a correct variable type used to represent a single character.

Final Answer

The option that is not a correct variable type in many programming languages is real.